. >> pelley: lou, thanks very much. paul vance is a police lieutenant with the connecticut state police. he's been briefing reporters today and i asked him what he saw when he arrived at the school. >> it's a horrific scene. it's a very tragic scene, as we've been reporting. it involve it had death of numerous children, 20 to be exact, six adults. and it's a very tragic, horrific scene. >> pelley: were the children who were killed in one classroom? spread out across the entire school? >> one section of the building is the best way we can explain it. the deceased were all located in one complete section of the building. >> pelley: and where was the gunman found? >> in the hallway. >> pelley: outside of a classroom? >> correct. >> pelley: as the sun is going down now, are the victims still in the school? >> yeah, this is a long process and by that i mean it's a crime scene, it's a criminal investigation, it mandates that we meticulously document every single square inch of that building. we meticulously document all the affirmative actions and that's time -- facts and circumstances, and that'